body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 40px;
    display: flex;
    justify-content: center;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    width: 350px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h2 {
    color: #333;
    margin-bottom: 20px;
}

input[type="number"] {
    width: 80%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-bottom: 15px;
}

button {
    padding: 10px 20px;
    background-color: #2a86ff;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
}

button:hover {
    background-color: #0059c9;
}

ul {
    padding-left: 0;
    list-style-type: none;
}

li {
    margin: 3px 0;
    font-size: 18px;
}